在 Hedera 区块链中创建智能合约时出现错误“交易过大”

Question

我的 bin 文件大小只有 18kb。 我也得到了使用 IPFS 的解决方案，但不知道如何使用它。 如果有任何使用 IPFS 的参考，请分享给我。 ：

错误：PrecheckStatusError：事务 0.0.34898094@1653658245.135892060 预检查失败，状态为 TRANSACTION_OVERSIZE

这是我的代码：

const {
  AccountId,
  PrivateKey,
  Client,
  FileCreateTransaction,
  ContractCreateTransaction,
  ContractFunctionParameters,
  ContractExecuteTransaction,
  ContractCallQuery,
  Hbar
} = require("@hashgraph/sdk");
const fs = require("fs");

const operatorId = AccountId.fromString(process.env.OPERATOR_ID);
const operatorKey = PrivateKey.fromString(process.env.OPERATOR_PVKEY);
const client = Client.forTestnet().setOperator(operatorId, operatorKey);


async function main() {
  // Import the compiled contract bytecode
  const contractBytecode = fs.readFileSync("first_contract_sol_ABC_TOKEN.bin");
  // Create a file on Hedera and store the bytecode
  const fileCreateTx = new FileCreateTransaction().setContents(contractBytecode).setKeys([operatorKey]).setMaxTransactionFee(new Hbar(1))
    .freezeWith(client);
  const fileCreateSign = await fileCreateTx.sign(operatorKey);
  console.log(Date.now() / 1000);
  const fileCreateSubmit = await fileCreateSign.execute(client);
  const fileCreateRx = await fileCreateSubmit.getReceipt(client);
  const bytecodeFileId = fileCreateRx.fileId;
  console.log(`- The bytecode file ID is: ${bytecodeFileId} \n`);  

    // Instantiate the smart contract
    const contractInstantiateTx = new ContractCreateTransaction()
    .setBytecodeFileId(bytecodeFileId)
    .setGas(100000)
    .setConstructorParameters(
      new ContractFunctionParameters().addString("Alice").addUint256(111111)
    );
  const contractInstantiateSubmit = await contractInstantiateTx.execute(client);
  const contractInstantiateRx = await contractInstantiateSubmit.getReceipt(
    client
  );
  const contractId = contractInstantiateRx.contractId;
  const contractAddress = contractId.toSolidityAddress();
  console.log(`- The smart contract ID is: ${contractId} \n`);
  console.log(`- Smart contract ID in Solidity format: ${contractAddress} \n`);

}
main();

Answer 1

您遇到了 TRANSACTION_OVERSIZE 错误，因为 Hedera 事务的大小限制为 6kb，包括所有签名。

如果为你的合约编译的字节码比较大，那么你需要在 Hedera 上创建一个文件，然后将内容附加到多个块中，然后创建合约。

当您使用ContractCreateFlow()时，SDK 现在会为您处理这 3 个步骤。下面是一个示例：

const contractCreate = new ContractCreateFlow()
    .setGas(100000)
    .setBytecode(bytecode);

//Sign the transaction with the client operator key and submit to a Hedera network
const txResponse = contractCreate.execute(client);

//Get the receipt of the transaction
const receipt = (await txResponse).getReceipt(client);